SUPPLEMENTARY RESTRAINT SYSTEM (SRS) 5 4. SAFETY PRECAUTIONS NOTE DTC’S (Diagnostic Trouble Codes) are the most important source of information when troubleshooting. When troubleshooting the SRS, always inspect DTC’S before disconnecting the battery. The SRS system contains components, which could be potentially hazardous to the technician if not serviced and handled correctly. The following guidelines are intended to alert the technician to potential sources of danger and emphasize the importance of ensuring good condition of SRS components fitted to the vehicle. It should be noted that these precautions are not restricted to operations performed when servicing the SRS system; the same care should be exercised when working on ancillary systems and components located in the vicinity of the SRS components; these include but are not limited to: Steering system – (steering wheel airbag) Body, seats and trim components – (Passenger airbag, seatbelt pre-tensioners, SRS ECU, front impact sensing unit). Electrical system components (SRS harnesses) WARNING 1. The airbag modules contain extremely flammable components. Contact with water, acid or heavy metals may produce harmful or explosive compounds. Do not dismantle burn or bring into contact with electricity. 2. Do not expose an airbag module or seatbelt pre-tensioner to heat. 3. The inflator is intend not to fire below the threshold current. To avoid inadvertent triggering of the airbag, NEVER apply a current through the squib except with the specified test equipment and procedures. 4. Never dispose the airbag module un-deployed without proper instructions as this may result in possible injury. All deployments must follow special safety instructions. All units should be activate (deployed) prior to disposal. 5. The airbag modules or their components must not be adapted or installed in any other vehicle other than the specific vehicle for which they are designed and manufactured. Any attempt to adapt or install airbag modules or their components in any other vehicle can result in personal injury to the occupants in the event of accidents. 6. The system has back-up power for about 30 seconds after the battery is disconnected. Wait for at least ONE minute after disconnecting the battery before servicing the vehicle to prevent accidental deployment and personal injury. GENERAL PRECAUTIONS The following precautions have to be taken while working on SRS system. 1. When removing, testing or installing an airbag module, do not lean directly over it. Always refer SRS component testing precautions. 2. In order to assure system integrity, it is essential that the SRS system is regularly check and maintain so that it is ready for effective operation in the event of a collision. Carefully inspect SRS components before installation. Do not install a part that shows signs of being dropped or improperly handled, such as dents, cracks or deformation. Dropped modules may get damaged. In such cases contact the supplier for further action. 3. Ensure SRS components are not contaminated with oil, grease, detergent or water. It is essential that SRS components are fitted using the recommended torques. 4. Do not install used SRS components from another vehicle. When replacing SRS system, only use TATA authorized genuine new parts. 5. It is essential that SRS components are fitted using the recommended torques. Always use specified earth fixings tightened to the correct torque. Poor earthing can cause intermittent problems that are difficult to diagnose. 6. Do not cut, drill, braze or solder the Airbag gas generator assembly. 7. Do not allow the air bag module assemblies to come into contact with electrical current. 8. Never hammer on any SRS component - it might get damaged internally. 9. Do not carry the airbag or pre-tensioner module, with the cable assembly connected - long cables can pick up Electrostatic Charge particularly if dragged on the floor and could lead to deployment of airbag. 10.Do not attempt to refold the bag into the cover. Deployment protection may be compromise or injury may be induce. This is because foreign objects could enter the bag, or the vehicle specific bag-folding pattern could be alter from its original optimized design.
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